Question

HAIIII

PLZ ANSWER THIIS QUESTION
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The diameter of the larger circle is 12.5 cm. The diameter of the smaller circle is 3.5 cm.

What is the best approximation for the area of the shaded region?

Use 3.14 to approximate pi.

28.26 cm²
113.04 cm²
132.27 cm²
254.34 cm²

Answer 1

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GIVEN :

D = 12.5cm

d = 3.5 cm

=> R = 12.5 /2

and r = 3.5/2

Area of larger circle

$= \pi {R}^{2}$

$= 3.14 \times 12.5 \div 2 \times 12.5 \div 2$

$= 122.65$

Area of smaller circle

$= \pi {r}^{2}$

$= 3.14 \times 3.5 \div 2 \times 3.5 \div 2$

$= 9.61$

Now ,

Area of shaded region = Area of larger circle - Area of smaller circle

= 122.65 - 9.61

= 113.4 cm^2

$\huge {Hope\: it \: helps ..}$